Pretty cool, Wailer! I've played harp for over 45 years, and I still play 'em right out of the box. If they go a little out of tune, I keep playin' 'em, but I'll change the way I blow or draw to keep it from being exacerbated. In other words, I won't overplay 'em. If it messes bad with the chording, then I'll replace 'em. I prob'ly have the time to tech my own harps, but I'm not a guy who enjoys that kinda stuff. I play every week, and I prob'ly blow up one or two harps/yr., if that.

I don't know if I made this clear in the video or not--the harp I'm working on there is out-of-the-box--nothing done to it--never played before I made the video. The point is, harps rarely, in my experience (I mainly only work on MB), start out being in tune. If you ever had a harp that you just loved from the start and thought it just sounded better than any other harp you have--chances are that harp was in tune. Of course, they also get worse with age and need to be tweaked now and then.

Of course, it's as Jeff says--we just learn to compensate with a little subtle change in embouchure here and there, often without even thinking about it. However, I have found that playing a harp that is in tune is just a better experience, and, at least in my own personal experience, they sound much better.

Messing with harps ain't for everybody, I agree--it's just something I got hooked on along the way. . .